383245856 has 72 divisors (see below), whose sum is σ = 882308700. Its totient is φ = 163387392.

The previous prime is 383245847. The next prime is 383245861. The reversal of 383245856 is 658542383.

It can be written as a sum of positive squares in 2 ways, for example, as 380874256 + 2371600 = 19516^2 + 1540^2 .

It is a super-2 number, since 2×383245856² = 293754772282345472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364820 + ... + 365868.

Almost surely, 2^383245856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 383245856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441154350).

383245856 is an abundant number, since it is smaller than the sum of its proper divisors (499062844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

383245856 is a wasteful number, since it uses less digits than its factorization.

383245856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1291 counting only the distinct ones).

The product of its digits is 691200, while the sum is 44.

The square root of 383245856 is about 19576.6661104489. Note that the first 3 decimals coincide. The cubic root of 383245856 is about 726.3721021779.

The spelling of 383245856 in words is "three hundred eighty-three million, two hundred forty-five thousand, eight hundred fifty-six".